SpdCtrl SW2 Act
With the Airspeed Sensor connected to the ECU – by moving the
AUX switch to the AutoOff (SW2) position, while maintaining a
model air speed > 40km/h, the following options are available:
Hold-Speed = momentarily sustains the current flight speed
DISABLED/NONE = no function, thrust control remains active
LIN-Speed Ctrl = linear Cruise Control
3-StepSpdCtrl = three speed Cruise Control
MAX LimitAirSpd
Maximum allowed flight speed of the model, in km/h or mph. If this
speed is achieved, turbine thrust is automatically reduced – to keep
the model from exceeding the maximum limit. This safety option is
always active, despite the position of the AUX switch.
Max.AirSpeed Maximum flight speed value, in km/h or mph, for the Cruise Control
mode. This value corresponds to the speed at the maximum throttle
stick position.
Min.AirSpeed Minimum flight speed value, in km/h or mph, for the Cruise Control
mode. This value corresponds to the speed at the minimum throttle
stick position.
SpeedRegVal-I
Regulator speed, which sets the reaction time of the PID servo loop
– much like a sensitivity control in a gyroscope system.
Increase this value, to increase reaction sensitivity.
SpeedRegVal-P
Regulator coefficient (proportional)
Under normal circumstances, does not require alteration.
SpeedRegVal-D
Regulator coefficient (differential)
Under normal circumstances, does not require alteration.
MinRPM SpdCtrl
Turbine RPM low Limit value in cruise control mode.
In airspeed control mode, the turbine RPM will not be set below this
limit value. This allows a faster reaction time of the airspeed control
loop, if this value is set higher than the idle RPM (@ 50000-60000
RPMs are reasonable values)
Explanation of the speed regulator options:
If the Airspeed Sensor is
NOT connected – the standard functions of the AUX switch
are assigned as follows:
Standard assignments of the AUX switch:
Position SW0 = Off, turns the turbine off, immediately
Position SW1 = Start/Standby, normal thrust control
Position SW2 = AutoOff, normal shutdown method
With the Airspeed Sensor connected to the ECU, the AUX switch positions SW0 and
SW2 include the expanded functions that are covered in the above parameters table.
These expanded assignments are only valid when the model is airborne (with a flight
speed > 40 km/h), otherwise the standard functions remain active.
Page 66/74
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